/Engine/Plugins/Online/OnlineServicesNull/Source/Public/Online/AchievementsNull.h
IAchievements.
virtual [TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FQueryAchievementDefinitions](API\Plugins\OnlineServicesInterface\Online\FQueryAchievementDefinitions) > QueryAchievementDefinitions ( [FQueryAchievementDefinitions::Params](API\Plugins\OnlineServicesInterface\Online\FQueryAchievementDefinitions\Params) && Params )